Finding the Fourth Proportional to 65,162.58, 89,897.63 and 39,648.49

Step by Step Solution

1. Step 1: Write the proportion equation
   65,162.58 : 89,897.63 = 39,648.49 : x
2. Step 2: Convert to fraction form
   65,162.58/89,897.63 = 39,648.49/x
3. Step 3: Cross multiply
   65,162.58x = 89,897.63 × 39,648.49
4. Step 4: Simplify right side
   65,162.58x = 3,564,305,184.96
5. Step 5: Solve for x
   x = 3,564,305,184.96/65,162.58
6. Step 6: Final answer
   x = 54,698.65